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dl2k: Reorder and cleanup initialization

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Move HW init and stop into separate functions.
Request IRQ only after the HW has been reset (so interrupts are
disabled and no stale interrupts are pending).

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ondrej Zary 2015-11-19 20:13:05 +01:00 committed by David S. Miller
parent 39536ff81e
commit 966e07f4bf
1 changed files with 56 additions and 39 deletions
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95
drivers/net/ethernet/dlink/dl2k.c
View file

@ -252,19 +252,6 @@ rio_probe1 (struct pci_dev *pdev, const struct pci_device_id *ent)
if (err)
goto err_out_unmap_rx;
if (np->chip_id == CHIP_IP1000A &&
(np->pdev->revision == 0x40 || np->pdev->revision == 0x41)) {
/* PHY magic taken from ipg driver, undocumented registers */
mii_write(dev, np->phy_addr, 31, 0x0001);
mii_write(dev, np->phy_addr, 27, 0x01e0);
mii_write(dev, np->phy_addr, 31, 0x0002);
mii_write(dev, np->phy_addr, 27, 0xeb8e);
mii_write(dev, np->phy_addr, 31, 0x0000);
mii_write(dev, np->phy_addr, 30, 0x005e);
/* advertise 1000BASE-T half & full duplex, prefer MASTER */
mii_write(dev, np->phy_addr, MII_CTRL1000, 0x0700);
}
/* Fiber device? */
np->phy_media = (dr16(ASICCtrl) & PhyMedia) ? 1 : 0;
np->link_status = 0;
@ -274,13 +261,11 @@ rio_probe1 (struct pci_dev *pdev, const struct pci_device_id *ent)
if (np->an_enable == 2) {
np->an_enable = 1;
}
mii_set_media_pcs (dev);
} else {
/* Auto-Negotiation is mandatory for 1000BASE-T,
IEEE 802.3ab Annex 28D page 14 */
if (np->speed == 1000)
np->an_enable = 1;
mii_set_media (dev);
}
err = register_netdev (dev);
@ -531,25 +516,13 @@ static int alloc_list(struct net_device *dev)
return 0;
}
static int
rio_open (struct net_device *dev)
static void rio_hw_init(struct net_device *dev)
{
struct netdev_private *np = netdev_priv(dev);
void __iomem *ioaddr = np->ioaddr;
const int irq = np->pdev->irq;
int i;
u16 macctrl;
i = alloc_list(dev);
if (i)
return i;
i = request_irq(irq, rio_interrupt, IRQF_SHARED, dev->name, dev);
if (i) {
free_list(dev);
return i;
}
/* Reset all logic functions */
dw16(ASICCtrl + 2,
GlobalReset | DMAReset | FIFOReset | NetworkReset | HostReset);
@ -560,6 +533,24 @@ rio_open (struct net_device *dev)
/* DebugCtrl bit 4, 5, 9 must set */
dw32(DebugCtrl, dr32(DebugCtrl) | 0x0230);
if (np->chip_id == CHIP_IP1000A &&
(np->pdev->revision == 0x40 || np->pdev->revision == 0x41)) {
/* PHY magic taken from ipg driver, undocumented registers */
mii_write(dev, np->phy_addr, 31, 0x0001);
mii_write(dev, np->phy_addr, 27, 0x01e0);
mii_write(dev, np->phy_addr, 31, 0x0002);
mii_write(dev, np->phy_addr, 27, 0xeb8e);
mii_write(dev, np->phy_addr, 31, 0x0000);
mii_write(dev, np->phy_addr, 30, 0x005e);
/* advertise 1000BASE-T half & full duplex, prefer MASTER */
mii_write(dev, np->phy_addr, MII_CTRL1000, 0x0700);
}
if (np->phy_media)
mii_set_media_pcs(dev);
else
mii_set_media(dev);
/* Jumbo frame */
if (np->jumbo != 0)
dw16(MaxFrameSize, MAX_JUMBO+14);
@ -602,10 +593,6 @@ rio_open (struct net_device *dev)
dw32(MACCtrl, dr32(MACCtrl) | AutoVLANuntagging);
}
setup_timer(&np->timer, rio_timer, (unsigned long)dev);
np->timer.expires = jiffies + 1*HZ;
add_timer (&np->timer);
/* Start Tx/Rx */
dw32(MACCtrl, dr32(MACCtrl) | StatsEnable | RxEnable | TxEnable);
@ -615,6 +602,42 @@ rio_open (struct net_device *dev)
macctrl |= (np->tx_flow) ? TxFlowControlEnable : 0;
macctrl |= (np->rx_flow) ? RxFlowControlEnable : 0;
dw16(MACCtrl, macctrl);
}
static void rio_hw_stop(struct net_device *dev)
{
struct netdev_private *np = netdev_priv(dev);
void __iomem *ioaddr = np->ioaddr;
/* Disable interrupts */
dw16(IntEnable, 0);
/* Stop Tx and Rx logics */
dw32(MACCtrl, TxDisable | RxDisable | StatsDisable);
}
static int rio_open(struct net_device *dev)
{
struct netdev_private *np = netdev_priv(dev);
const int irq = np->pdev->irq;
int i;
i = alloc_list(dev);
if (i)
return i;
rio_hw_init(dev);
i = request_irq(irq, rio_interrupt, IRQF_SHARED, dev->name, dev);
if (i) {
rio_hw_stop(dev);
free_list(dev);
return i;
}
setup_timer(&np->timer, rio_timer, (unsigned long)dev);
np->timer.expires = jiffies + 1 * HZ;
add_timer(&np->timer);
netif_start_queue (dev);
@ -1764,17 +1787,11 @@ static int
rio_close (struct net_device *dev)
{
struct netdev_private *np = netdev_priv(dev);
void __iomem *ioaddr = np->ioaddr;
struct pci_dev *pdev = np->pdev;
netif_stop_queue (dev);
/* Disable interrupts */
dw16(IntEnable, 0);
/* Stop Tx and Rx logics */
dw32(MACCtrl, TxDisable | RxDisable | StatsDisable);
rio_hw_stop(dev);
free_irq(pdev->irq, dev);
del_timer_sync (&np->timer);